2021121110233 has 2 divisors, whose sum is σ = 2021121110234. Its totient is φ = 2021121110232.

The previous prime is 2021121110219. The next prime is 2021121110249. The reversal of 2021121110233 is 3320111211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1908464886784 + 112656223449 = 1381472^2 + 335643^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021121110233 - 2¹³ = 2021121102041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021121110233.

It is not a weakly prime, because it can be changed into another prime (2021121110213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560555116 + 1010560555117.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560555117).

Almost surely, 2^{2021121110233} is an apocalyptic number.

It is an amenable number.

2021121110233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021121110233 is an equidigital number, since it uses as much as digits as its factorization.

2021121110233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021121110233 its reverse (3320111211202), we get a palindrome (5341232321435).

The spelling of 2021121110233 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred thirty-three".